cooled and uncooled receiver frontends up to 96 GHz for the Effelsberg 100m-telescope

(21cm receiver)

receiver box All primary focus receivers are mounted into standardized receiver boxes. This allows for a fast change to other receivers in the primary focus cabin of the Effelsberg 100m-telescope. Links: 3mm Receiver Data 21cm Receiver Data 21cm Technical Report

(3mm Receiver)

9 mm secondary focus receiver The second module of the 9mm secondary focus receiver is specified as correlation receiver. Individual circular extractions are combined as follows: LHC Beam 4 with RHC Beam 6 RHC Beam 6 with LHC Beam 5 RHC Beam 5 with RHC Beam 4 The signals are multiplied phase dependent over three independent mixer and amplifier setups. Beam distances: Horn1 ⇔ Horn2: 486,3 mm Horn2 ⇔ Horn3: 225,1 mm Beam angles: Beam1: λ = 1,04° Beam2: λ = 0° Beam3: λ = 0,48° flexible; Δλ = 0,5° Links: Receiver Data Module 1 Technical Report Module 1 Receiver Data Module 2 Technical Report Module 2

Refrigator The refrigerator is used to cool down radioastronomical receivers. It is a multi-staged unit which can achieve a temperature of about 15 Kelvin (-258°C).

(picture of the 5cm receiver)

(waveguide setup of the 9mm receiver's correlation module)

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